/**
 * Tencent is pleased to support the open source community by making Tars available.
 *
 * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.qq.tars.support.log;

final class ThrowableInfo {

    private transient Throwable throwable;
    private String[] rep;

    public ThrowableInfo(Throwable throwable) {
        this.throwable = throwable;
    }

    public Throwable getThrowable() {
        return throwable;
    }

    public String[] getThrowableStrArr() {
        if (throwable == null) {
            return null;
        }

        if (rep != null) {
            return rep.clone();
        } else {
            ArrayWriter aw = new ArrayWriter();
            throwable.printStackTrace(aw);
            rep = aw.toStringArray();
            return rep;
        }
    }

    public String getThrowableStr() {
        String[] arr = getThrowableStrArr();
        if (arr == null) {
            return "";
        }

        StringBuilder strBuf = new StringBuilder();
        for (int i = 0; i < arr.length; i++) {
            strBuf.append(arr[i]).append("\n");
        }
        return strBuf.toString();
    }
}
